"Make sure windows are locked because that creates a vacuum seal and no draft around the windows. And make sure any ventilation isn't blocked. That will allow heat to go through your house properly," said Stack.

Insulation is an essential part of keeping the heat in and fuel costs down.

"This homeowner added a layer on the ceiling and put in an insulated shelf to prevent heat from escaping from living areas to the attic," said Stack.

Another way to cut costs is to install a programmable thermostat, which can save you up to 20 percent on heating.

"Lower it while you are away or sleeping and program it higher when you come home from work," said Stack.

Anywhere there are pipes, open up cabinets to let the warm air circulate. And if there are any holes around those pipes, or cables and wires, caulk them.

When it comes to the cost of fuel, this winter has shown some increases.

The average price of oil this month, $4.17 per gallon, is up from $4 last February.

Propane, not as popular as other heating sources, averaged $3.85 this month, up from $3.06 last February.

Paul Degnan's house has natural gas, which is a lot cheaper, with big potential savings during winters like this one.

"Talking to my neighbors about what they spent, my gas bill is less," said Degnan.

"NStar gas has seen the last few years being the best we ever had with conversions to natural gas, largely due to pricing. It would come in at about $1.63 per gallon," said Mike Durand of NStar.

But installing natural gas in your home can cost between $6,000 and $10,000.

For more information on energy audits and incentives for upgrades, click here.